WPF Binding multiple DataContexts (code-behind)

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C#

WPF

data-binding

Hi!
I’m a beginner when it comes to WPF so please forgive me.
I need a grid which binds to two objects as datasources and occasionally updates the content
I took http://www.switchonthecode.com/tutorials/wpf-tutorial-using-the-listview-part-1 as an example which works perfectly

<Window x:Class="WpfApplication17.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        DataContext="{Binding RelativeSource={RelativeSource Self}}"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <StackPanel>
            <ListView Name="MyListview" ItemsSource="{Binding GameCollection}">
                <ListView.View>
                    <GridView>
                        <GridViewColumn Width="140" Header="Game Name" DisplayMemberBinding="{Binding GameName}"  />
                        <GridViewColumn Width="140" Header="Creator" DisplayMemberBinding="{Binding Creator}" />
                        <GridViewColumn Width="140" Header="Publisher" DisplayMemberBinding="{Binding Publisher}" />
                    </GridView>
                </ListView.View>
            </ListView>
            <Button HorizontalAlignment="Right" Margin="5,5,5,5" Content="Add Row" Click="AddRow_Click" />
        </StackPanel>
    </Grid>
</Window>

However I have problems with the following lines

DataContext="{Binding RelativeSource={RelativeSource Self}}";

Please be so nice and explain this line to me.
How do I rewrite the code without the RelativeSource binding in code-behind and add two sources to the grid



Any help is appreciated

Thanks you in advance!


Mat